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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License
     15  */
     16 
     17 package com.android.systemui.statusbar.phone;
     18 
     19 import android.content.Context;
     20 import android.text.TextUtils;
     21 import android.util.AttributeSet;
     22 import android.view.View;
     23 import android.widget.TextView;
     24 
     25 /**
     26  * A view to show hints on Keyguard ("Swipe up to unlock", "Tap again to open").
     27  */
     28 public class KeyguardIndicationTextView extends TextView {
     29 
     30     public KeyguardIndicationTextView(Context context) {
     31         super(context);
     32     }
     33 
     34     public KeyguardIndicationTextView(Context context, AttributeSet attrs) {
     35         super(context, attrs);
     36     }
     37 
     38     public KeyguardIndicationTextView(Context context, AttributeSet attrs, int defStyleAttr) {
     39         super(context, attrs, defStyleAttr);
     40     }
     41 
     42     public KeyguardIndicationTextView(Context context, AttributeSet attrs, int defStyleAttr,
     43             int defStyleRes) {
     44         super(context, attrs, defStyleAttr, defStyleRes);
     45     }
     46 
     47     /**
     48      * Changes the text with an animation and makes sure a single indication is shown long enough.
     49      *
     50      * @param text The text to show.
     51      */
     52     public void switchIndication(CharSequence text) {
     53 
     54         // TODO: Animation, make sure that we will show one indication long enough.
     55         if (TextUtils.isEmpty(text)) {
     56             setVisibility(View.INVISIBLE);
     57         } else {
     58             setVisibility(View.VISIBLE);
     59             setText(text);
     60         }
     61     }
     62 
     63     /**
     64      * See {@link #switchIndication}.
     65      */
     66     public void switchIndication(int textResId) {
     67         switchIndication(getResources().getText(textResId));
     68     }
     69 }
     70